EP2719188B1 - Procede de sortie d'un mode de veille basse consommation et dispositif associe - Google Patents

Procede de sortie d'un mode de veille basse consommation et dispositif associe Download PDF

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Publication number
EP2719188B1
EP2719188B1 EP12729081.5A EP12729081A EP2719188B1 EP 2719188 B1 EP2719188 B1 EP 2719188B1 EP 12729081 A EP12729081 A EP 12729081A EP 2719188 B1 EP2719188 B1 EP 2719188B1
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EP
European Patent Office
Prior art keywords
interface
decoder
wake
level
power consumption
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Application number
EP12729081.5A
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German (de)
English (en)
French (fr)
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EP2719188A1 (fr
Inventor
Ludovic Jeanne
Jean-Yves Moraillon
Jean-Marie Steyer
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InterDigital CE Patent Holdings SAS
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InterDigital CE Patent Holdings SAS
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4436—Power management, e.g. shutting down unused components of the receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the invention relates to the field of audiovisual program decoder receivers and more specifically to the consumption of energy in standby mode and on exiting standby mode.
  • Audiovisual program receivers / decoders offer more and more functions to the user.
  • decoders There are different types of decoders that are separated by their input interface. Some connect to an antenna socket allowing reception of a TNT (Digital Terrestrial Television) signal, others are connected to a cable network set up by an operator and still others have a digital interface. 'network input for connection to a local home network or to a modem router which is itself connected to the Internet. In the latter case, the decoder is intended for IPTV (Internet Protocol TeleVision) reception.
  • IPTV Internet Protocol TeleVision
  • hybrid decoders equipped with several input interfaces such as, for example, a TNT tuner and an Ethernet network interface (IEEE802.3). In this case, the decoder can receive and restore a program received by one or the other of the interfaces.
  • LAN from the English Local Area Network
  • LAN can be wired (for example with an Ethernet type connection), wireless (with for example a Wifi connection) or combine the two types of network. 'interconnection between the devices connected to it.
  • the network interface When a device wakes from sleep mode controlled through its network interface (eg Ethernet or Wifi), the network interface consumes several watts. This consumption penalizes energy saving in standby mode.
  • the network interface eg Ethernet or Wifi
  • the invention makes it possible to resolve at least one of the drawbacks of the prior art by optimizing the consumption in standby mode of a device while making it possible to control the exit from standby mode via an interface.
  • the invention relates to a method of controlling a device, the device operating in several operating modes corresponding to different levels of energy consumption and comprising a first and a second communication interface, the method being characterized in that 'it comprises, in the device, the steps of activating the second communication interface on receipt of a first wake-up message by the first interface when the device is in a first operating mode corresponding to a first level of consumption of energy, the activation leading to a second level of energy consumption higher than the first level of consumption energy, of reception of a second wake-up message by the second communication interface, the second wake-up message causing a closure of the supply lines with a view to supplying the functional blocks of said device, an exit from a mode standby, and consequently switching the device to an operating mode corresponding to a third level of energy consumption, the third level of energy consumption being greater than the second level of energy consumption.
  • the first mode of operation corresponds to a configuration of the device in which only the first interface is activated.
  • the second operating mode corresponds to a configuration of the device in which only the first and second interfaces are activated.
  • the first interface is a wireless communication interface.
  • the second interface is an Ethernet type network interface.
  • the second interface is a wireless network interface, compatible with the 802.11 transmission standards.
  • the invention also relates to a device operating in several operating modes corresponding to different levels of energy consumption and comprising a first and a second communication interface, the device being characterized in that it further comprises activation means. of the second interface on reception, by the first interface of a first wake-up message when the device is in a first operating mode corresponding to a first level of energy consumption, the activation causing a second level of energy consumption.
  • the second wake-up message causing the power lines to close with a view to supplying power to functional blocks of said device, an exit from a standby mode, and consequently a passage of the device into an operating mode t corresponding to a third level of energy consumption, the third level of energy consumption being greater than the second level of energy consumption.
  • the first wake-up message addressed to the first interface and the second wake-up message addressed to the second interface can be transmitted by different devices, which offers great flexibility in the implementation of functions requiring interactions between several devices.
  • One of the advantages provided by the invention is the ease of implementation of the invention in the design of a product having two communication interfaces and considering the conventional architecture of an audiovisual program receiver.
  • the classic architecture of a consumer product of this type, as well as the implementation of the different operating modes is such that it is very simple, during a new design phase, to adapt an existing architecture to integrate the invention is then to allow, when using the product, the wake-up of a device from another device without having to power the network interface in standby mode.
  • modules represented are functional units, which may or may not correspond to physically distinguishable units.
  • these modules or some of them can be grouped together in a single component, or constitute functionalities of the same software. Conversely, some modules may possibly be composed of separate physical entities.
  • the invention relates to a method of controlling the operating modes of an audiovisual program decoder and in particular the passage of the decoder from a low-consumption standby mode to a functional mode in which a connection to a network local is active.
  • the figure 1 illustrates a domestic local area network of the LAN type grouping together three television decoders 1, 2, and 3, themselves respectively connected to televisions 5, 6, 7.
  • the decoders are devices allowing the reception of audiovisual programs, their recording and their restitution on display devices such as televisions 5, 6 and 7.
  • the decoders are connected to the LAN network either by wired (for example Ethernet) or wireless (for example WiFi of the 802.11 type) communication interfaces.
  • the home LAN network is connected to an external broadband network of the WAN type (standing for Wide Area Network) via the gateway equipment 1.
  • the gateway is for example an ADSL modem router (from the English Asymmetric Digital Subscriber Line) which allows the connection of a household to the Internet network but also, through service providers (operators), the reception of television and video-on-demand programs.
  • the decoders 2, 3 and 4 include devices for recording the data received, such as non-volatile memory or a hard disk.
  • a decoder having recorded an audiovisual program can, among other functions, serve as a local program server for another decoder through the local home network LAN.
  • the decoder which operates, for example, as a program server for another decoder is called a "master" decoder.
  • the other decoder which receives the program transmitted by the “master” decoder over the LAN network, is called the “client” decoder.
  • Each device should then be kept in a standby mode whenever possible. For example, when a decoder is not recording or playing back a program, it can be put on standby by user action or after it has detected an absence of use over a period of time. predefined.
  • the waking of a device is activated when the network interface receives a data frame containing a predefined sequence.
  • this type of remote wake-up requires that the network interface be active, which requires that it be powered.
  • the consumption of a network interface can reach several watts, which is not optimal with regard to the recommendations and directives aimed at reducing the overall energy consumption and more particularly that of domestic equipment.
  • the figure 2 illustrates two decoders interconnected by a local home network.
  • the decoder 3 is a “master” decoder capable of operating, for example, as a local program server for the “client” decoder 4.
  • the decoder 4 must be able to wake up the decoder 3 if the latter is in a standby mode prior to the request, for example, for transmission of an audiovisual program stored in the decoder 3.
  • a decoder has to wake up the other in order to obtain a service that it does not have itself.
  • This may for example be data descrambling, remote payment, authentication, or the control of third party equipment connected to the “master” decoder by other interfaces.
  • the decoder 4 uses a communication interface with a very low level of electrical consumption to address a message to the decoder 3.
  • This interface can be wired or wireless, for example a Bluetooth wireless interface (as described in the IEEE802.15.1 standard) or a Zigbee wireless interface (based on the WPAN 802.15.4 standard; Wireless Personal Area Networks).
  • the power consumption level of the low-power interface is sufficiently low compared to the consumption level of an Ethernet interface or an 802.11 interface so that it is possible to maintain it constantly powered, even when the decoder is operating in standby mode.
  • the message sent by the decoder 4 and received by the low-consumption interface of the decoder 3 causes the activation of the LAN network interface of the decoder 3.
  • the message is for example a message. proprietary type, carried by one or more data frames defined according to the Bluetooth standard.
  • the message can equally well be a proprietary message carried by one or more data frames defined according to the Zigbee standard, or any transmission standard defining the exchange of data corresponding to a type of communication interface.
  • the message includes an identifier which, interpreted by a wake-up module included in the Bluetooth interface of the decoder 3, causes the activation of a control signal (as described below; see in particular figure 5 ), which signal enables the activation of the local network interface.
  • the decoder 3 can then be woken up remotely by sending a magic packet (Wake-on LAN).
  • This method of waking up from a two-step standby mode makes it possible both to be able to wake up a decoder in “deep standby” mode, while remaining sensitive and responsive to the reception of a message and to consequently reduce its power consumption in deactivating the interface (s) for connection to the local home network LAN, when switching to standby mode.
  • the message sent by the decoder 4 may be a standardized message, defined in a standard corresponding to a type of communication interface, and which is intended to control the output of a standby mode of the device including this type of interface.
  • Decoder 3 includes a control unit 31 which is its digital heart.
  • the control unit includes a microprocessor and memories.
  • the memories conventionally consist of a non-volatile storage memory where the executable code is located which corresponds to all the applications, routines and drivers supported by the decoder as well as the working memory for storing data specific to the execution of applications.
  • the control unit further comprises the conventional functional elements of an audiovisual program decoder, such as the transport interface, the demultiplexer, the content access control, the buffers and the audio and video decoding modules.
  • the decoder 3 also comprises a data storage device of the hard disk type for recording programs with a view to their replay or their transmission through the home network LAN.
  • the decoder interfaces with the network using the Ethernet interface 32. This interface can be wired or wireless and can receive a magic packet as defined in the Wake-on LAN method for activate a device remotely when it has been placed in a standby mode.
  • the possible operating modes of the decoder 3 include a mode in which all the elements are activated, making available all the services and all the functions implemented. Another operating mode of the decoder 3 is such that all the functional elements of the decoder are on standby with the exception of the Bluetooth communication interface 33, the consumption of which is very low. This mode, where only the Bluetooth communication interface 33 is active, results in a very low overall residual consumption of the decoder in standby mode. According to the invention, there is at least one other intermediate mode in which, in addition to the Bluetooth communication interface 33, the connection interface to the LAN network is supplied with power. In the latter mode, consumption is increased, but nevertheless remains lower than that of the decoder when multiple functional elements (or modules) are active and numerous functions are available.
  • the decoder 4 is structurally identical to the decoder 3. It comprises a control unit 41, a LAN network interface 42, a low consumption interface 43 and a hard disk 44. Also, it can be used as a “client” decoder in combination with decoder 3 then used as “master” decoder or vice versa as decoder “Master” delivering an audiovisual program to the decoder 3 in “client” mode.
  • the decoder 4 in “client” mode When the decoder 4 in “client” mode is preparing to receive an audiovisual program from the decoder 3 operating in standby mode, it remotely controls the exit from standby mode of the decoder 3 according to the method and as follows:
  • the unit control 41 of decoder 4 commands the sending of a wake-up message for decoder 3 via the Bluetooth wireless communication interface 43.
  • the message is transmitted by radio according to the transmission protocol bluetooth (short distance) in the environment close to the decoder 4.
  • the decoder 3 within the range of the transmission field of the interface 43, receives the wake-up message via the Bluetooth communication interface 33.
  • the Bluetooth interface 33 of decoder 3 is still active; the other functional elements of decoder 3 are inactive.
  • the reception and recognition of the wake-up message by the Bluetooth interface 33 of the decoder 3 causes the change of state of an activation signal of the LAN network interface 32 of the decoder 3.
  • the activation signal causes the switching of a power supply circuit of the LAN interface 32.
  • the interface 32 comprises one or more integrated circuits having a control input of activation and deactivation making it respectively operational or inoperative and corresponding to a standby and wakeup command of the interface 32.
  • the decoder 4 addresses, under the control of the control unit 41 and via its local network interface 42, a wake-up message of the type " magic packet ”, through the local area network LAN.
  • the reception of this "magic packet”, specifying the decoder 3 as recipient of the packet, causes the exit from standby mode of the decoder 3 and the activation of the functions necessary for the requested service, such as the transmission of a program stored on the disk. hard 34 to the decoder 4, through its network interface 42, with a view to its decoding and its reproduction.
  • the activation of the functions following the reception of a “magic packet” is limited to a predetermined number of functional modules of the device coming out of standby. Activation may, for example, only concern the local area network interface LAN as well as the associated control logic allowing external devices to communicate through the local area network interface LAN. Activation can also, according to another example, relate to a display and keyboard management module, a reception module for the remote control, one or more USB interfaces, a hard disk, a memory module, or any other module. or set of modules integrated into the device.
  • the figure 4 is a functional diagram which represents the passage from a low consumption standby mode to an operational mode of the decoder according to an embodiment of the invention.
  • the decoder is in a standby mode where only the Bluetooth communication interface, with very low energy consumption, is activated.
  • the decoder is waiting for a wake-up message via the Bluetooth communication interface.
  • the decoder has received a wake-up message and the Bluetooth communication interface checks a signal for activating the local area network interface LAN. The interface is then active and the decoder can be woken up by receiving a magic packet (also usually called “magic packet”) on the LAN network interface.
  • a magic packet also usually called “magic packet”
  • control signal can act on a supply or clock switching circuitry, or else can be applied to one or more inputs for enabling one or more integrated circuits which constitute all or part of the network interface.
  • LAN LAN.
  • the decoder is waiting for a magic packet.
  • the reception of a magic packet causes the waking up of the decoder and the activation of the required functions.
  • a supply module 35 delivers supply lines.
  • the power supply lines deliver power to the various functional blocks that make up the decoder.
  • a power supply line directly supplies the Bluetooth interface 33 which is permanently energized.
  • Another supply line supplies the LAN interface 32 through an activation circuit 39.
  • the activation circuit 39 is driven by an activation signal 37 from the LAN interface, generated by the control module. wakeup 330 of the Bluetooth interface 33.
  • the other supply lines pass through the supply interface 36 which allows the opening or closing of the lines and therefore the application or not of the corresponding supply voltages to the other units functional (31, 34).
  • the power supply interface is driven by the standby output control signal 38, itself generated by the WoL (Wake-on Lan) module 320 of the local area network interface LAN 32.
  • the Bluetooth communication interface 33 of the decoder 3 positioned in standby mode can receive a wake-up message.
  • the incoming messages are interpreted by the wake-up module 330 of the Bluetooth interface 33.
  • the wake-up module 330 positions the activation signal 37 of the local area network interface LAN in order to control the activation circuit 39 to supply power to the local area network interface LAN 32.
  • the WoL module of the local area network interface LAN positions the standby output control signal 38 in order to control the power supply interface 36 and to close the lines of power supply in order to power the control unit 31 and hard disk 34 functional blocks and to come out of standby mode.
  • the decoder 3 then comes out of standby mode and the functions which require the operation of the control unit 31 and of the hard disk 34 are then available. This is the case, for example, with the transmission of an audiovisual program to another decoder, via the local area network interface LAN 32, with a view to its decoding and its reproduction.
  • This wake-up process in two successive steps enables a decoder to be activated by exiting standby mode while eliminating the need for energy consumption inherent in keeping the LAN interface active.
  • the energy consumption of the decoder is significantly reduced, which makes it possible to better meet the requirements of the directives aimed at reducing the overall consumption of the stock of domestic equipment.
  • the invention described in the context of transmission of a program from one decoder to another decoder through a home network, however relates to any other device having at least two communication interfaces and several operating modes. corresponding to several levels of energy consumption.
  • the invention can be applied for example to a computer comprising two communication interfaces such as a WiFi interface and a Bluetooth interface.
  • a storage server equipment intended for use on a local network conventionally called NAS (Network Attached Storage), which equipment can be woken up by a computer placed in a nearby environment and using by example a Bluetooth interface to send a first wake-up message and a wired Ethernet or Wifi interface to send a “magic packet”.
  • NAS Network Attached Storage

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Power Sources (AREA)
  • Small-Scale Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Communication Control (AREA)
EP12729081.5A 2011-06-09 2012-06-07 Procede de sortie d'un mode de veille basse consommation et dispositif associe Active EP2719188B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1155061 2011-06-09
PCT/EP2012/060839 WO2012168391A1 (fr) 2011-06-09 2012-06-07 Procede de sortie d'un mode de veille basse consommation et dispositif associe

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EP2719188A1 EP2719188A1 (fr) 2014-04-16
EP2719188B1 true EP2719188B1 (fr) 2021-10-13

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US (1) US10009842B2 (ja)
EP (1) EP2719188B1 (ja)
JP (1) JP2014522146A (ja)
KR (1) KR20140039028A (ja)
CN (1) CN103597845A (ja)
BR (1) BR112013030634B1 (ja)
WO (1) WO2012168391A1 (ja)

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BR112013030634A2 (pt) 2016-11-29
KR20140039028A (ko) 2014-03-31
CN103597845A (zh) 2014-02-19
EP2719188A1 (fr) 2014-04-16
WO2012168391A1 (fr) 2012-12-13
US20140198697A1 (en) 2014-07-17
US10009842B2 (en) 2018-06-26
JP2014522146A (ja) 2014-08-28

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